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Product Name: Palmitic acid
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Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 1H-Pyrazole-3-carboxylic acid, 4, 5-dihydro-5-oxo-, hydrazide
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Purity: 98.0%
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73972-70-0

73972-70-0 structure

73972-70-0 structure

Name: 1H-Pyrazole-3-carboxylic acid, 4, 5-dihydro-5-oxo-, hydrazide
Chemical Name: 5-oxo-1,4-dihydropyrazole-3-carbohydrazide
CAS Number: 73972-70-0
Molecular Formula: C₄H₆N₄O₂
Molecular Weight: 142.11600
Create Date: 2018-06-13 11:44:22
Modify Date: 2025-08-25 15:18:52

Name	5-oxo-1,4-dihydropyrazole-3-carbohydrazide
Synonyms	WLN: T5NMV DHJ EVMZ 2-Pyrazoline-3-carboxylic acid,5-oxo-,hydrazide 5-oxo-4,5-dihydro-1h-pyrazole-3-carbohydrazide 5-Oxo-2-pyrazoline-3-carboxylic acid hydrazide

Density	1.92g/cm3
Molecular Formula	C₄H₆N₄O₂
Molecular Weight	142.11600
Exact Mass	142.04900
PSA	96.58000
Index of Refraction	1.789

CHEMICAL IDENTIFICATION

RTECS NUMBER :: UQ8960000

CHEMICAL NAME :: 2-Pyrazoline-3-carboxylic acid, 5-oxo-, hydrazide

CAS REGISTRY NUMBER :: 73972-70-0

LAST UPDATED :: 197901

DATA ITEMS CITED :: 1

MOLECULAR FORMULA :: C4-H6-N4-O2

MOLECULAR WEIGHT :: 142.14

WISWESSER LINE NOTATION :: T5NMV DHJ EVMZ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 180 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: CSLNX* U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) Volume(issue)/page/year: NX#03244

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